Granted Patent
Utility
US 4,776,339 · App. 07/022,200
Interlock for oxygen saturation monitor anesthesia apparatus
Inventor:
Joachim Schreiber
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Mar 5, 1987
Inventor
Joachim Schreiber
Assignee (at issue)
NAD AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.